All Questions ⁺⁰225579 Questions

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21

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counting

In how many ways can three pairs of siblings from different families be seated in two rows of three chairs, if siblings may sit next to each other in the same row, but no child may sit directly in front of their sibling?

Guest Mar 22, 2023

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15

1

counting

Six children are each offered a single scoop of any of 3 flavors of ice cream from the Combinations Creamery. How many ways can each child choose a flavor for their scoop of ice cream so that some flavor of ice cream is selected by exactly three c read more ..

Guest Mar 22, 2023

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28

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6th Grade Homework

Emily and Tammy are planting vegetables in their garden. Emily is planting 81 tomato plants and Tamara is planting 54 corn plants. If each row of their garden has the same number of plants in them, what is the GREATEST number of plants in read more ..

Guest Mar 22, 2023

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26

2

cosx * sinx

given the value of cosx * sinx, is there anyway to find x.
So for instance as an example,
given that cosx * sinx = -1/3, what is x in radians

Guest Mar 22, 2023

Mar 21, 2023

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18

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Geometry

In tetrahedron ABCO, angle AOB = angle AOC = angle BOC = 90^\circ. A cube is inscribed in the tetrahedron so that one of its vertices is at O, and the opposite vertex lies on face ABC. Let OA = 1, OB = 1, OC = 1. Show that the read more ..

Guest Mar 21, 2023

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16

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Probability

Two points on a circle of radius 1 are chosen at random. Find the probability that the distance between the two points is at most 1.5.

Guest Mar 21, 2023

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26

1

Help

The graph of is shown in red below. Find f(-2)
[asy]
size(150);
real ticklength=0.1cm;
real axisarrowsize=0.14cm;
pen axispen=black+1.3bp;<#> real vectorarrowsize=0.2cm;<#> real tickdown=-0.5;<#> read more ..

Guest Mar 21, 2023

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15

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Stats

A list of ten distinct, positive integers has a median of 5.5. What is the smallest possible average of the ten positive integers? Explain your ansswer in complete sentences.

Guest Mar 21, 2023

+1

14

1

+7

What are the solutions to the equation on [0,2pi)?

What are the solutions to the equation on [0,2π)? cot(3x)=−√3
Drag all solutions to the box to correctly complete the table.
(The possible answers are: pi/3, pi/9, pi/18, 5pi/3, 5pi/18, 7pi/18, 11pi/18, 17pi/18, read more ..

WinterFur Mar 21, 2023

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15

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expected value

I need help with these
Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have a 5 on them.
(a) What is the expected value of the number shown when we draw a single slip of paper? read more ..

Guest Mar 21, 2023

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14

1

Quadratics

Which two numbers can multiply into 5184 but add into -144?

Guest Mar 21, 2023

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17

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binomials

(a) Simplify (n/k)/(n/(k - 1))
(b) For some positive integer n, the expansion of (1 + x)^n has three consecutive coefficients a, b, c that satisfy 1:8:28. What must n be?

Guest Mar 21, 2023

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19

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A cylinder has a height of 16 feet and a radius of 19 feet. What is its volume? Use 𝜋 ≈ 3.14 and round your answer to the nearest hundredt

A cylinder has a height of 16 feet and a radius of 19 feet. What is its volume? Use 𝜋 ≈ 3.14 and round your answer to the nearest hundredth.

Guest Mar 21, 2023

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18

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counting

In how many ways can three points be selected from the grid below so that they form a right isosceles triangle?

Guest Mar 21, 2023

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19

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question

Last year 950 people attended a town's annual parade. This year 1,520 people attended. What was the percent increase in attendance from last year to this year?

Guest Mar 21, 2023

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20

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geometry

Let ABC be a right triangle, and let H be the point on side AB so that CH is perpendicular to AB. Prove that (x + h)^2*(y + h)^2 = (a + b)^4.

Guest Mar 21, 2023

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17

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Counting

You are given the 4 x 4 grid below.
(a) Find the number of ways of placing 8 counters in the squares (at most one counter per square), so that each row contains exactly two counters.
(b) Find the number of ways read more ..

Guest Mar 21, 2023

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20

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counting

Help how to do this
Cai writes down the list of positive integers, excluding squares and cubes and all perfect powers. His sequence starts
2, 3, 5, 6, 7, 10, 11, ...
What is the 100th term in Cai's list?

Guest Mar 21, 2023

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26

1

+8

PLS HELP

Simplify the following expression into a simplified fraction,

sxnshiine Mar 21, 2023

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21

1

Sector Area Level 1

In circle M with m∠LMN=82m∠ andLM=9 units find area of sector LMN. Round to the nearest hundredth.

Guest Mar 21, 2023

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18

0

Find the cardinal number for the following sets.

Find the cardinal number for the following sets.
A =
{110,
111, read more ..

Guest Mar 21, 2023

0

17

0

counting

Help I need to count this
Catherine rolls a standard 6-sided die five times, and the product of her rolls is . How many different sequences of rolls could there have been? (The order of the rolls matters.)

Guest Mar 21, 2023

0

15

1

counting

Find the number of positive integers that satisfy both the following conditions:
Each digit is a 1 or a 2
The sum of the digits is 3

Guest Mar 21, 2023

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16

2

geometry

Plz help with geometry problem
In the diagram below, PQRS is a parallelogram with a perimeter of 26 and an area of 28. What is the perimeter of rectangle OSTQ? Include an explanation of how you solved the probl read more ..

Guest Mar 21, 2023

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